// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
description: No variable environment is created for the statement body
info: |
    IterationStatement : for ( ForDeclaration of AssignmentExpression ) Statement

    [...]
    2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
       lexicalBinding, labelSet).

    13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation

    [...]
    5. Repeat
       [...]
       d. If lhsKind is either assignment or varBinding, then
          [...]
       e. Else,
          i. Assert: lhsKind is lexicalBinding.
          ii. Assert: lhs is a ForDeclaration.
          iii. Let iterationEnv be NewDeclarativeEnvironment(oldEnv).
          iv. Perform BindingInstantiation for lhs passing iterationEnv as the
              argument.
          v. Set the running execution context's LexicalEnvironment to
             iterationEnv.
          [...]
features: [let]
---*/

function Test() {
    var probeBefore = function() { return x; };
    var probeExpr, probeDecl, probeBody;
    var x = 1;

    for (
        let [_ = probeDecl = function() { return x; }]
        in
        { '': probeExpr = function() { return x; }}
      )
      var x = 2, __ = probeBody = function() { return x; };


    assert.sameValue(probeBefore(), 2, 'reference preceding statement');
    assert.sameValue(probeExpr(), 2, 'reference from AssignmentExpression');
    assert.sameValue(probeDecl(), 2, 'reference from ForDeclaration');
    assert.sameValue(probeBody(), 2, 'reference from statement body');
    assert.sameValue(x, 2, 'reference following statement');
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_TEST; i++) {
    Test();
}
